Merge bitcoin#21505: build: Remove unused header from the build system

0eabb2a build: Remove unused header from the build system (Hennadii Stepanov)

Pull request description:

  The only `#include <miniupnpc/miniwget.h>` was removed in bitcoin#16659.

ACKs for top commit:
  practicalswift:
    cr ACK 0eabb2a
  fanquake:
    ACK 0eabb2a

Tree-SHA512: 630da03875c851e80286561eae0f966c89624cbb17b90f70e2bec9a69146e79d088fc176e07a4906915770ac1cdb11341a7a431ea7cf6a59d2816e927486f335

build_msvc/bitcoin_config.h

@@ -252,9 +252,6 @@
 /* Define to 1 if you have the <miniupnpc/miniupnpc.h> header file. */
 #define HAVE_MINIUPNPC_MINIUPNPC_H 1
 
-/* Define to 1 if you have the <miniupnpc/miniwget.h> header file. */
-#define HAVE_MINIUPNPC_MINIWGET_H 1
-
 /* Define to 1 if you have the <miniupnpc/upnpcommands.h> header file. */
 #define HAVE_MINIUPNPC_UPNPCOMMANDS_H 1
 

configure.ac

@@ -1003,7 +1003,7 @@ fi
 dnl Check for libminiupnpc (optional)
 if test x$use_upnp != xno; then
   AC_CHECK_HEADERS(
-    [miniupnpc/miniwget.h miniupnpc/miniupnpc.h miniupnpc/upnpcommands.h miniupnpc/upnperrors.h],
+    [miniupnpc/miniupnpc.h miniupnpc/upnpcommands.h miniupnpc/upnperrors.h],
     [AC_CHECK_LIB([miniupnpc], [upnpDiscover], [MINIUPNPC_LIBS=-lminiupnpc], [have_miniupnpc=no])],
     [have_miniupnpc=no]
   )